Avalon PSU3400-03 Power Supply for Avalon A1346 A1366 Miners

Avalon PSU3400-03 Power Supply for Avalon A1346 A1366 MinersAvalon PSU3400 03 Power Supply OEM Replacement for Canaan A1346 and A1366 Miners The Avalon PSU3400 03 is the OEM spec power supply unit for the Canaan Avalon A1346 and A1366 series miners. Built to deliver up to 3100W on the main rail with an 11. 5 14. 5V output and a secondary 12V 200W auxiliary rail, the PSU3400 03 is the direct replacement when an A1346 A1366 PSU fails in the field same chassis dimensions, same connector pinout, same control

Avalon PSU3400-03 Power Supply | OEM Replacement for Canaan A1346 and A1366 Miners

The Avalon PSU3400-03 is the OEM-spec power supply unit for the Canaan Avalon A1346 and A1366 series miners. Built to deliver up to 3100W on the main rail with an 11.5-14.5V output and a secondary 12V / 200W auxiliary rail, the PSU3400-03 is the direct replacement when an A1346 / A1366 PSU fails in the field — same chassis dimensions, same connector pinout, same control protocol as the original.

Mining PSUs are the highest-failure-rate component on any ASIC miner — they live under continuous 90%+ load in elevated ambient temperature, switching at full duty cycle around the clock. The PSU3400-03 is the supported repair path: instead of waiting for warranty turnaround or attempting board-level repair on a failed PSU, swap in a fresh OEM unit and bring the miner back online the same day.

When You Need an Avalon PSU3400-03

• A1346 / A1366 miner won't start — fans spin briefly then PSU shuts down, no hashboard activation.
• Repeated overcurrent / overvoltage shutdowns reported in the miner controller logs.
• PSU draws AC input but produces no DC output — secondary-side bulk caps failed or main switching MOSFET shorted.
• Audible fan failure on the PSU — internal cooling fan can't be replaced, full PSU swap required.
• Visible damage — burn marks, swollen capacitors, cracked PCB on the original PSU.

Electrical Specifications

• AC input 200-300VAC, 16A — covers standard 220-240VAC mining infrastructure with derating headroom.
• Main DC output 11.5-14.5V, up to 3100W — adjustable rail voltage for the hashboard core supply.
• Auxiliary DC output 12V, 200W — powers the control board, fans, and indicator LEDs.
• OEM-spec connector pinout — direct mate with A1346 / A1366 mainboard harness.
• Built-in OCP / OVP / OTP protection — overcurrent, overvoltage, over-temperature shutdown.
• Active PFC — better than 0.95 power factor at typical load.

Avalon PSU3400-03 Specifications

FAQ — Avalon PSU3400-03

Q: Will the PSU3400-03 work on A1246 or older Avalon models?
A: No — the PSU3400-03 is specifically rated for the A1346 / A1366 power envelope. Older A1246 miners use a different PSU model with different power and connector spec — confirm before ordering.

Q: Can I run the PSU3400-03 at 110VAC?
A: No — the input range is 200-300VAC. 110VAC operation is not supported. North American mining farms typically use 240VAC service for this reason.

Q: How do I confirm a PSU failure vs a mainboard failure?
A: Disconnect the PSU output cables and measure the rails with a multimeter under no-load (some PSUs need a load to start, others self-test): if no output, PSU is failed. If output is present but the miner won't start, the failure is downstream on the mainboard or controller.

Q: What's the typical service life?
A: At continuous full-load mining duty, expect 18-36 months MTBF on the PSU — capacitor aging on the secondary side is the most common end-of-life failure mode.

Q: Bulk pricing for repair shops or farms?
A: Yes — email [email protected] for volume pricing on A13 series PSU orders.

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Mining farms running Avalon A1346 / A1366 fleets and stocking spare PSUs? Email [email protected] for bulk pricing and matched repair-kit options. Worldwide shipping from our Shenzhen warehouse.